Program-controlled exchange, also known as program-controlled digital exchange or digital program-controlled exchange, usually refers to the switching equipment used in the telephone exchange network, which uses computer programs to control the connection of telephones.
The basic functions of digital program-controlled switches are: subscriber line access, relay connection, billing, equipment management, etc.
In emergency situations and industrial environments, communication is crucial. Whether it's notifying emergency services or coordinating a response to a...
In today's fast-paced and interconnected world, staying connected is crucial for both personal and professional reasons. However, adverse weather conditions...